ASTM D4904-99(2020)

Standard Practice for Cooling of Analytical Solutions

SIGNIFICANCE AND USE
4.1 The solubility of extracts is influenced by temperature. The analytical solutions prepared from tanning extracts are dissolved or diluted in hot water. It is necessary to exercise caution in cooling these solutions, and to do so in such a way as to avoid chilling, under-cooling, or uneven cooling of the solutions.
SCOPE
1.1 This practice covers a standard procedure for the cooling of analytical solutions such as those prepared in Practices D4901, D4905, or D6405. The tannin analysis results for an analytical solution are to some extent dependent on the conditions of the cooling of that solution.  
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

• Status: Published
• Publication Date: 30-Nov-2020
• ICS: 71.040.20 - Laboratory ware and related apparatus
• Technical Committee: D31 - Leather
• Drafting Committee: D31.01 - Vegetable Leather

Relations

• Refers: ASTM D4905-99(2009) - Standard Practice for Preparation of Solution of Solid, Pasty and Powdered Vegetable Tannin Extracts
• Effective Date: 01-Apr-2009
• Refers: ASTM D6405-99(2009) - Standard Practice for Extraction of Tannins from Raw and Spent Materials
• Effective Date: 01-Apr-2009
• Refers: ASTM D4901-99(2009) - Standard Practice for Preparation of Solution of Liquid Vegetable Tannin Extracts
• Effective Date: 01-Apr-2009
• Refers: ASTM D6405-99(2004) - Standard Practice for Extraction of Tannins from Raw and Spent Materials
• Effective Date: 01-Apr-2004
• Refers: ASTM D4905-99(2004) - Standard Practice for Preparation of Solution of Solid, Pasty and Powdered Vegetable Tannin Extracts
• Effective Date: 01-Apr-2004
• Refers: ASTM D4901-99(2004) - Standard Practice for Preparation of Solution of Liquid Vegetable Tannin Extracts
• Effective Date: 01-Apr-2004
• Refers: ASTM D6405-99 - Standard Practice for Extraction of Tannins from Raw and Spent Materials
• Effective Date: 10-May-1999
• Refers: ASTM D4905-99 - Standard Practice for Preparation of Solution of Solid, Pasty and Powdered Vegetable Tannin Extracts
• Effective Date: 10-May-1999
• Refers: ASTM D4901-99 - Standard Practice for Preparation of Solution of Liquid Vegetable Tannin Extracts
• Effective Date: 10-May-1999

Standards Content (Sample)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D4904 − 99 (Reapproved 2020)
Standard Practice for
Cooling of Analytical Solutions
This standard is issued under the fixed designation D4904; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 2.2 ALCA Methods:
A12 Cooling of Analytical Solutions
1.1 This practice covers a standard procedure for the cool-
ing of analytical solutions such as those prepared in Practices
3. Summary of Practice
D4901, D4905,or D6405. The tannin analysis results for an
3.1 This practice specifies a procedure to follow in cooling
analytical solution are to some extent dependent on the
to standard or room temperature the hot analytical solutions
conditions of the cooling of that solution.
prepared from tanning materials for Practices D4901, D4905,
1.2 The values stated in SI units are to be regarded as
or D6405.
standard. No other units of measurement are included in this
standard.
4. Significance and Use
1.3 This standard does not purport to address all of the
4.1 The solubility of extracts is influenced by temperature.
safety concerns, if any, associated with its use. It is the
The analytical solutions prepared from tanning extracts are
responsibility of the user of this standard to establish appro-
dissolved or diluted in hot water. It is necessary to exercise
priate safety, health, and environmental practices and deter-
caution in cooling these solutions, and to do so in such a way
mine the applicability of regulatory limitations prior to use.
as to avoid chilling, under-cooling, or uneven cooling of the
1.4 This international standard was developed in accor-
solutions.
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
5. Specimen
Development of International Standards, Guides and Recom-
5.1 The specimen shall be the 1-Lor 2-Lsolutions prepared
mendations issued by the World Trade Organization Technical
under Practices D4901, D4905,or D6405.
Barriers to Trade (TBT) Committee.
6. Procedure
2. Referenced Documents
2 6.1 The prepared solutions shall be protected from drafts,
2.1 ASTM Standards:
and shall be allowed to stand overnight in an ambient tempera-
D4901 Practice for Preparation of Solution of Liquid Veg-
ture of not less than 23 °C, nor more than 28 °C. After their
etable Tannin Extracts
temperature has been adjusted, the solutions shall be made up
D4905 Practice for Preparation of Solution of Solid, Pasty
to the mark with distilled water at 23°C. Where a constant
and
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